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 A284391 1-limiting word of the morphism 0 -> 1, 1 -> 001. 4
 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1 COMMENTS The morphism 0 -> 1, 1 -> 001 has two limiting words. If the number of iterations is even, the 0-word evolves from 0 -> 1 -> 001 -> 11001 -> 00100111001; if the number of iterations is odd, the 1-word evolves from 0 -> 1 -> 001 -> 11001 -> 00100111001 -> 110011100100100111001, as in A284391. The 0-limiting word results from the 1 limiting word by replacing the initial 00 by 1. Conjecture: the limiting frequency of 0's in both limiting words is 1/2. LINKS Clark Kimberling, Table of n, a(n) for n = 1..10000 MATHEMATICA s = Nest[Flatten[# /. {0 -> {1}, 1 -> {0, 0, 1}}] &, {0}, 9]; (* A284391 *) Flatten[Position[s, 0]];  (* A284392 *) Flatten[Position[s, 1]];  (* A284393 *) CROSSREFS A284388 shifted right. Cf. A284392, A284393. Sequence in context: A267869 A068434 A323511 * A127015 A281114 A286749 Adjacent sequences:  A284388 A284389 A284390 * A284392 A284393 A284394 KEYWORD nonn,easy AUTHOR Clark Kimberling, Mar 30 2017 STATUS approved

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Last modified June 17 17:33 EDT 2021. Contains 345085 sequences. (Running on oeis4.)